Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 9,740	$ 4,858
Restricted cash	13,800	43,339
Short-term investments	94,351	51,092
Receivables
Trade, less allowance for credit losses of $184 as of March 31, 2023 and December 31, 2022, respectively	1,771	978
Other	13,751	12,826
Prepaid expenses and other	4,330	5,066
Total current assets	137,743	118,159
Long-term investments	7,460	0
Property, plant and equipment, net	6,908	7,329
Intangible assets, net	43,848	44,455
Goodwill	36,966	36,923
Right-of-use assets	7,617	8,086
Other assets	1,004	1,025
Total assets	241,546	215,977
Current liabilities
Accounts payable	3,809	4,068
Accrued compensation and benefits	4,959	6,377
Other accrued liabilities	22,887	23,747
Deferred revenue	15	25
Current portion of long-term debt	13,819	43,219
Current portion of lease liabilities	1,244	1,209
Total current liabilities	46,733	78,645
Contract with Customer, Liability, Noncurrent	1,818	1,818
Lease liabilities, net of current portion	6,623	6,992
Deferred tax liabilities	2,239	2,263
Total liabilities	57,413	89,718
Commitments and contingencies (Note 14)
Shareholders' equity
Common stock, no par value, 400,000,000 shares authorized as of March 31, 2023 and December 31, 2022; 255,482,753 shares and 208,150,021 shares issued and outstanding as of March 31, 2023 and December 31, 2022, respectively	0	0
Additional paid-in capital	2,078,133	1,998,314
Accumulated deficit	(1,891,301)	(1,868,567)
Accumulated other comprehensive loss	(2,699)	(3,488)
Total shareholders' equity	184,133	126,259
Total liabilities and shareholders' equity	$ 241,546	$ 215,977